Babel

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Deprecations & breaking changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* Python 3.6 is no longer supported (:gh:`919`) - Aarni Koskela
* The `get_next_timezone_transition` function is no more (:gh:`958`) - Aarni Koskela
* `Locale.parse()` will no longer return `None`; it will always return a Locale or raise an exception.
Passing in `None`, though technically allowed by the typing, will raise. (:gh:`966`)

New features
~~~~~~~~~~~~

* CLDR: Babel now uses CLDR 42 (:gh:`951`) - Aarni Koskela
* Dates: `pytz` is now optional; Babel will prefer it but will use `zoneinfo` when available. (:gh:`940`) - ds-cbo
* General: Babel now ships type annotations, thanks to Jonah Lawrence's work in multiple PRs.
* Locales: modifiers are now retained when parsing locales (:gh:`947`) - martin f. krafft
* Messages: JavaScript template string expression extraction is now smarter. (:gh:`939`) - Johannes Wilm
* Numbers: NaN and Infinity are now better supported (:gh:`955`) - Jonah Lawrence
* Numbers: Short compact currency formats are now supported (:gh:`926`) - Jonah Lawrence
* Numbers: There's now a `Format.compact_decimal` utility function. (:gh:`921`) - Jonah Lawrence

Bugfixes
~~~~~~~~

* Dates: The cache for parsed datetime patterns is now bounded (:gh:`967`) - Aarni Koskela
* Messages: Fuzzy candidate matching accuracy is improved (:gh:`970`) - Jean Abou Samra
* Numbers: Compact singular formats and patterns with no numbers work correctly (:gh:`930`, :gh:`932`) - Jonah Lawrence, Jun Omae

Improvements & cleanup
~~~~~~~~~~~~~~~~~~~~~~

* Dates: `babel.dates.UTC` is now an alias for `datetime.timezone.utc` (:gh:`957`) - Aarni Koskela
* Dates: `babel.localtime` was slightly cleaned up. (:gh:`952`) - Aarni Koskela
* Documentation: Documentation was improved by Maciej Olko, Jonah Lawrence, lilinjie, and Aarni Koskela.
* Infrastructure: Babel is now being linted with pre-commit and ruff. - Aarni Koskela

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Upcoming deprecation
~~~~~~~~~~~~~~~~~~~~

* This version, Babel 2.11, is the last version of Babel to support Python 3.6.
Babel 2.12 will require Python 3.7 or newer.

Improvements
~~~~~~~~~~~~

* Support for hex escapes in JavaScript string literals :gh:`877` - Przemyslaw Wegrzyn
* Add support for formatting decimals in compact form :gh:`909` - Jonah Lawrence
* Adapt parse_date to handle ISO dates in ASCII format :gh:`842` - Eric L.
* Use `ast` instead of `eval` for Python string extraction :gh:`915` - Aarni Koskela
* This also enables extraction from static f-strings.
F-strings with expressions are silently ignored (but won't raise an error as they used to).

Infrastructure
~~~~~~~~~~~~~~

* Tests: Use regular asserts and ``pytest.raises()`` :gh:`875` – Aarni Koskela
* Wheels are now built in GitHub Actions :gh:`888` – Aarni Koskela
* Small improvements to the CLDR downloader script :gh:`894` – Aarni Koskela
* Remove antiquated `__nonzero__` methods :gh:`896` - Nikita Sobolev
* Remove superfluous `__unicode__` declarations :gh:`905` - Lukas Juhrich
* Mark package compatible with Python 3.11 :gh:`913` - Aarni Koskela
* Quiesce pytest warnings :gh:`916` - Aarni Koskela

Bugfixes
~~~~~~~~

* Use email.Message for pofile header parsing instead of the deprecated ``cgi.parse_header`` function. :gh:`876` – Aarni Koskela
* Remove determining time zone via systemsetup on macOS :gh:`914` - Aarni Koskela

Documentation
~~~~~~~~~~~~~

* Update Python versions in documentation :gh:`898` - Raphael Nestler
* Align BSD-3 license with OSI template :gh:`912` - Lukas Kahwe Smith

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This is a bugfix release for Babel 2.10.2, which was mistakenly packaged with outdated locale data.

Thanks to Michał Górny for pointing this out and Jun Omae for verifying.

This and future Babel PyPI packages will be built by a more automated process,
which should make problems like this less likely to occur.

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This is a bugfix release for Babel 2.10.1.

* Fallback count="other" format in format_currency() (:gh:`872`) - Jun Omae
* Fix get_period_id() with ``dayPeriodRule`` across 0:00 (:gh:`871`) - Jun Omae
* Add support for ``b`` and ``B`` period symbols in time format (:gh:`869`) - Jun Omae
* chore(docs/typo): Fixes a minor typo in a function comment (:gh:`864`) - Frank Harrison

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This is a bugfix release for Babel 2.10.0.

* Messages: Fix ``distutils`` import. Regressed in :gh:`843`. (:gh:`852`) - Nehal J Wani
* The wheel file is no longer marked as universal, since Babel only supports Python 3.

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Upcoming deprecation
~~~~~~~~~~~~~~~~~~~~

* The ``get_next_timezone_transition()`` function is marked deprecated in this version and will be removed
likely as soon as Babel 2.11. No replacement for this function is planned; based on discussion in
:gh:`716`, it's likely the function is not used in any real code. (:gh:`852`) - Aarni Koskela, Paul Ganssle

Improvements
~~~~~~~~~~~~

* CLDR: Upgrade to CLDR 41.0. (:gh:`853`) - Aarni Koskela

* The ``c`` and ``e`` plural form operands introduced in CLDR 40 are parsed, but otherwise unsupported. (:gh:`826`)
* Non-nominative forms of units are currently ignored.

* Messages: Implement ``--init-missing`` option for ``pybabel update`` (:gh:`785`) - ruro
* Messages: For ``extract``, you can now replace the built-in ``.*`` / ``_*`` ignored directory patterns
with ones of your own. (:gh:`832`) - Aarni Koskela, Kinshuk Dua
* Messages: Add ``--check`` to verify if catalogs are up-to-date (:gh:`831`) - Krzysztof Jagiełło
* Messages: Add ``--header-comment`` to override default header comment (:gh:`720`) - Mohamed Hafez Morsy, Aarni Koskela
* Dates: ``parse_time`` now supports 12-hour clock, and is better at parsing partial times.
(:gh:`834`) - Aarni Koskela, David Bauer, Arthur Jovart
* Dates: ``parse_date`` and ``parse_time`` now raise ``ParseError``, a subclass of ``ValueError``, in certain cases.
(:gh:`834`) - Aarni Koskela
* Dates: ``parse_date`` and ``parse_time`` now accept the ``format`` parameter.
(:gh:`834`) - Juliette Monsel, Aarni Koskela

Infrastructure
~~~~~~~~~~~~~~

* The internal ``babel/_compat.py`` module is no more (:gh:`808`) - Hugo van Kemenade
* Python 3.10 is officially supported (:gh:`809`) - Hugo van Kemenade
* There's now a friendly GitHub issue template. (:gh:`800`) – Álvaro Mondéjar Rubio
* Don't use the deprecated format_number function internally or in tests - Aarni Koskela
* Add GitHub URL for PyPi (:gh:`846`) - Andrii Oriekhov
* Python 3.12 compatibility: Prefer setuptools imports to distutils imports (:gh:`843`) - Aarni Koskela
* Python 3.11 compatibility: Add deprecations to l*gettext variants (:gh:`835`) - Aarni Koskela
* CI: Babel is now tested with PyPy 3.7. (:gh:`851`) - Aarni Koskela

Bugfixes
~~~~~~~~

* Date formatting: Allow using ``other`` as fallback form (:gh:`827`) - Aarni Koskela
* Locales: ``Locale.parse()`` normalizes variant tags to upper case (:gh:`829`) - Aarni Koskela
* A typo in the plural format for Maltese is fixed. (:gh:`796`) - Lukas Winkler
* Messages: Catalog date parsing is now timezone independent. (:gh:`701`) - rachele-collin
* Messages: Fix duplicate locations when writing without lineno (:gh:`837`) - Sigurd Ljødal
* Messages: Fix missing trailing semicolon in plural form headers (:gh:`848`) - farhan5900
* CLI: Fix output of ``--list-locales`` to not be a bytes repr (:gh:`845`) - Morgan Wahl

Documentation
~~~~~~~~~~~~~

* Documentation is now correctly built again, and up to date (:gh:`830`) - Aarni Koskela